Seiichi Matsumoto

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal display system
- Patent number 4,516,835
- Issue date May 14, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G02 - OPTICS
Information Patent Grant
View finder device having liquid crystal cell
- Patent number 4,299,462
- Issue date Nov 10, 1981
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G02 - OPTICS
Information Patent Grant
Power source switch for use in camera circuit to detect a focused c...
- Patent number 4,288,151
- Issue date Sep 8, 1981
- Canon Kabushiki Kaisha
- Seiichi Matsumoto
- G02 - OPTICS
Information Patent Grant
Distance detecting device
- Patent number RE30099
- Issue date Sep 18, 1979
- Canon Kabushiki Kaisha
- Kazuya Hosoe
- 354 -
Information Patent Grant
Power source switch for use in a camera circuit to detect a focused...
- Patent number 4,142,788
- Issue date Mar 6, 1979
- Canon Kabushiki Kaisha
- Seiichi Matsumoto
- G02 - OPTICS
Information Patent Grant
Liquid crystal display device for a camera
- Patent number 4,142,786
- Issue date Mar 6, 1979
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
View finder device having liquid crystal cell
- Patent number 4,140,378
- Issue date Feb 20, 1979
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G02 - OPTICS
Information Patent Grant
Liquid crystal display device
- Patent number 4,139,278
- Issue date Feb 13, 1979
- Canon Kabushiki Kaisha
- Seiichi Matsumoto
- G02 - OPTICS
Information Patent Grant
Range finder system
- Patent number 4,123,650
- Issue date Oct 31, 1978
- Kazuya Hosoe
- G02 - OPTICS
Information Patent Grant
Focusing screen unit for single lens reflex camera
- Patent number 4,104,651
- Issue date Aug 1, 1978
- Canon Kabushiki Kaisha
- Seiichi Matsumoto
- G02 - OPTICS
Information Patent Grant
Sharp focus detecting system
- Patent number 4,104,650
- Issue date Aug 1, 1978
- Canon Kabushiki Kaisha
- Kazuya Hosoe
- G02 - OPTICS

Seiichi Matsumoto

Person

Patents Grantslast 30 patents

Liquid crystal display system

View finder device having liquid crystal cell

Power source switch for use in camera circuit to detect a focused c...

Distance detecting device

Power source switch for use in a camera circuit to detect a focused...

Liquid crystal display device for a camera

View finder device having liquid crystal cell

Liquid crystal display device

Range finder system

Focusing screen unit for single lens reflex camera

Sharp focus detecting system